Converting In-Store Retail Patients to Long-Term Medical Device Subscriptions in HubSpot
Retail clinics struggled with manual multi-year subscription calculations.
We built a custom JavaScript POS widget inside the HubSpot patient record. It calculates, validates, and generates compliant medical device subscription contracts during the clinical consultation.
Executive Summary
Context
A multi-billion dollar medical device manufacturer sells direct-to-consumer through physical retail, providing localized clinical service and device distribution. It needed to scale in-store subscription adoption.
What We Built
An embedded JavaScript widget within HubSpot's contact sidebar that enables clinical coaches to dynamically calculate, validate, and programmatically generate complex medical device subscription contracts.
Tech Stack
- HubSpot CRM (Sales & Service Hub)
- custom JavaScript/Widget
- contract generation API
Not a fit if in-store staff cannot reliably operate a CRM sidebar tool during a live patient consultation, since the widget replaces spreadsheet calculators with a guided interface clinicians must still run themselves. It also depends on a configured HubSpot product library for the widget to pull from; without that product data in place, the calculation has nothing to validate against.
The Challenge
Quoting a multi-year subscription by hand slowed down the clinician and the patient in front of them. Staff had to switch between multiple internal tools or use spreadsheet calculators to present the dynamic financial options. They would input a starting device, a desired weekly payment, and a total contract duration, then manually copy the result into a generic contract template. This process was time-consuming, prone to human error, and prevented any centralized visibility for the corporate marketing team on which marketing channels were converting to high-value subscription contracts in physical retail.
Our Approach
A native but simplified product bundle setup couldn't handle the custom calculation logic this required, so we built a custom application in the contact sidebar instead. That cut down the complexity clinicians faced when presenting these dynamic financial options. The resulting custom JavaScript application enforced compliance at the point of conversion: it validated inputs and generated the complex calculations itself, so clinicians couldn't offer off-book deal terms or incorrect financial modelling before the contract was ever generated.
This engagement is part of our customization + optimization work for consumer services & retail organisations.
Impact
In-Store Conversion
The widget lets clinical coaches present standardized, error-free financial options and convert patients to multi-year contracts directly during the consultation.
Contract Generation
The widget generates legal subscription contracts programmatically via API, triggered instantly on submission, which removes manual document creation.
Centralized Visibility
The system gives corporate marketing teams near-real-time visibility into in-store conversion rates, linking marketing attribution data to finalized subscription revenue.
Simplified Compliance
The automated calculation rules built into the widget codebase reduce the risk of financial non-compliance, since staff cannot input non-standard deal terms.
The widget's backend codebase processed dynamic inputs. A staff member selected a variable, for example 'Weekly Payment', and the widget solved for the other required variable, 'Total Contract Value' or 'Duration', using complex amortization logic. That kept the math consistent before submission.
After validation, the widget triggered a server-side API call to an external document generation engine rather than just updating properties. The payload carried all calculated variables and automatically populated the correct legal template for immediate patient signature.
When the widget triggered contract generation, it also updated custom "Calculation Properties" on the patient's Deal record in HubSpot. That finalized the revenue amount automatically and kept the original performance marketing attribution data linked to the multi-year contract value.
Clinicians used to quote multi-year subscriptions with spreadsheet calculators and copy the result into a generic contract template. That was slow and prone to error. Now the widget in the HubSpot contact sidebar takes the starting device, weekly payment and contract duration. It validates them and runs the calculation itself, so a clinician can't offer off-book terms. It then generates the contract through an API on submission.
FAQ
The widget uses standard HubSpot property settings to lock the input variables, for example the upfront fee, weekly payment amount, and duration, before submission. The same data payload that generates the API call for the contract also updates the CRM properties, so the legal document and the reported Deal data match exactly.
